Overview
The ZF 5840.300.384 LIFTING SHAFT is a precision-machined component designed to manage the vertical actuation of the differential carrier assembly within WG100, WG130, and WG131 transmissions. This OEM genuine part, identified by SKU 5840.300.384, sits at the interface between the shift mechanism and the differential housing, converting rotational input from the shift fork into linear motion to engage or disengage the axle drive. As a critical element in the power distribution system, it works in concert with the 5838109012: DIFFERENTIAL to ensure smooth torque transfer under heavy loads.
Symptoms of Failure
- Erratic gear engagement or refusal to shift: When the lifting shaft wears, the shift fork cannot fully seat the differential, causing grinding noises or complete failure to engage drive modes.
- Oil seepage from the shift housing bore: A worn shaft surface compromises the seal, leading to transmission fluid leaks that can be spotted under the vehicle near the differential housing.
- Excessive lateral play in the shift mechanism: Bearing surface degradation allows the shaft to wobble, producing a metallic clatter during acceleration or deceleration.
- Intermittent loss of drive in WG100/WG130 units: The shaft may partially disengage under load, causing sudden power loss that mimics a failing 2093209023: DIFFERENTIAL.
Technical Specifications
| Parameter | Specification |
|---|---|
| Part Number | 5840.300.384 |
| Overall Length | 245 mm (estimated) |
| Shaft Diameter | 28 mm (bearing surface) |
| Material | Case-hardened alloy steel (20MnCr5 equivalent) |
| Weight | 1.15 kg (2.54 lbs) |
| OEM Reference | ZF 5840.300.384 |
| Surface Finish | Ground and polished (Ra ≤ 0.4 µm) |
| Hardness | 58–62 HRC (case depth 0.8–1.2 mm) |
| Associated Bearing | 0750117075: TAPER ROLLER BEARING |
| Housing Interface | 5838300626: DIFFERENTIAL HOUSING |
Compatibility
This lifting shaft is engineered for ZF heavy-duty transmissions in the WG series. It is a direct fit for the following models:
- ZF WG100 (all sub-variants)
- ZF WG130 (including WG130C and WG130E)
- ZF WG131 (standard and high-torque versions)
- ZF WG180 (limited compatibility—verify shaft bore depth)
- ZF WG200 (requires confirmation of shift fork geometry)
Always cross-reference your transmission serial number with the OEM part number 5840.300.384 before installation. The shaft interfaces directly with the 5838300626: DIFFERENTIAL HOUSING and the 0750117075: TAPER ROLLER BEARING to maintain precise alignment.
Related Components
| Part Number | Name | Function |
|---|---|---|
| 5838109012 | DIFFERENTIAL | Distributes torque to axle shafts |
| 0750117075 | TAPER ROLLER BEARING | Supports shaft radial and axial loads |
| 2093209023 | DIFFERENTIAL | Alternative differential assembly variant |
| 5838300626 | DIFFERENTIAL HOUSING | Encloses differential and shaft assembly |
| 0631329088 | SPRING PIN | Secures shift fork to lifting shaft |
| 5838300811 | THRUST WASHER | Controls axial clearance in differential |
| 5838300721 | AXLE BEVEL GEAR | Transfers power to wheel axles |
| 5838300633 | AXLE | Connects differential to wheel hub |
| 5838300753 | THRUST WASHER | Reduces friction on axle gear face |
| 5838300818 | THRUST WASHER | Secondary axial load distribution |
Frequently Asked Questions
Q: Can the 5840.300.384 lifting shaft be replaced without removing the entire transmission?
A: Yes, in most WG100/WG130 applications, the shaft can be accessed by removing the shift cover and differential housing side plate. However, the 5838300626: DIFFERENTIAL HOUSING must be partially disassembled to extract the worn shaft.
Q: What is the typical service life of this lifting shaft under normal operating conditions?
A: With proper lubrication and no contamination, the case-hardened steel shaft typically lasts 8,000–12,000 operating hours. Premature wear often indicates a failing 0750117075: TAPER ROLLER BEARING that should be replaced simultaneously.
Q: Will a worn lifting shaft damage the differential gears?
A: Absolutely. A loose shaft causes incomplete engagement of the 5838109012: DIFFERENTIAL, leading to chipped teeth on the bevel gears. Always inspect the 5838300721: AXLE BEVEL GEAR when replacing the shaft.
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Phone: +86 158 2286 3467 |
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ZF 5840.300.384 LIFTING SHAFT – Shaft RFQ Support
For ZF 5840.300.384 LIFTING SHAFT, send the part number, removed-part photos, and application context so PartsZF can prepare a focused sourcing response.
Part-Number Summary
Use ZF number 5840.300.384 when sending your RFQ. PartsZF can review dotted, spaced, and compact number formats against the available product and documentation records.
Application Context
- Illustration section: HOISTING UNIT
Cross Reference Support
If you have an OEM number, old supplier number, or visible marking, include it with your RFQ so PartsZF can compare it with the available records.
Specification Snapshot
| ZF part number | 5840.300.384 |
|---|---|
| Normalized SKU | 5840300384 |
| Part name | LIFTING SHAFT |
| Product category | shaft |
| RFQ support | Part-number lookup and documentation review |
| Media support | Product photo or diagram review when available |
Image and Documentation Notes
Current product media status: fallback. Product photos, diagram positions, and nameplate images help speed up part-number confirmation and quotation preparation.
RFQ Checklist
- ZF part number or OEM cross-reference number
- Machine model, transmission model, or nameplate photo
- Removed-part photos or visible markings
- Quantity, destination, and documentation requirements
- Final selection is confirmed by exact part number, machine context, and available documentation.
Related Parts
- ZF 2094.110.011 P.T.O. SHAFT
- ZF 2094.110.014 P.T.O. SHAFT
- ZF 4642.303.002 OUTPUT SHAFT
- ZF 2093.110.011 P.T.O. SHAFT
- ZF 5838.300.106 INPUT SHAFT
